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<title>API: event delegate.js (YUI Library)</title> |
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<h1><a href="http://developer.yahoo.com/yui/" title="Yahoo! UI Library">Yahoo! UI Library</a></h1> |
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<h3>event <span class="subtitle">3.0.0</span></h3> |
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<a href="./index.html" title="Yahoo! UI Library">Yahoo! UI Library</a> |
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> <a href="./module_event.html" title="event">event</a> |
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> delegate.js (source view) |
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#doc3 .classopts { display:none; } |
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<div class="highlight" ><pre><span class="c">/**</span> |
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<span class="c"> * Adds event delegation support to the library.</span> |
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<span class="c"> * </span> |
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<span class="c"> * @module event</span> |
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<span class="c"> * @submodule event-delegate</span> |
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<span class="c"> */</span> |
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<span class="k">var</span> <span class="nx">Event</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Event</span><span class="o">,</span> |
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<span class="nx">Lang</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Lang</span><span class="o">,</span> |
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<span class="nx">delegates</span> <span class="o">=</span> <span class="o">{},</span> |
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<span class="nx">specialTypes</span> <span class="o">=</span> <span class="o">{</span> |
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<span class="nx">mouseenter</span><span class="o">:</span> <span class="s2">"mouseover"</span><span class="o">,</span> |
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<span class="nx">mouseleave</span><span class="o">:</span> <span class="s2">"mouseout"</span> |
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<span class="o">},</span> |
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<span class="nx">resolveTextNode</span> <span class="o">=</span> <span class="k">function</span><span class="o">(</span><span class="nx">n</span><span class="o">)</span> <span class="o">{</span> |
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<span class="k">try</span> <span class="o">{</span> |
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<span class="k">if</span> <span class="o">(</span><span class="nx">n</span> <span class="o">&&</span> <span class="m">3</span> <span class="o">==</span> <span class="nx">n</span><span class="o">.</span><span class="nx">nodeType</span><span class="o">)</span> <span class="o">{</span> |
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<span class="k">return</span> <span class="nx">n</span><span class="o">.</span><span class="nx">parentNode</span><span class="o">;</span> |
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<span class="o">}</span> |
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<span class="o">}</span> <span class="k">catch</span><span class="o">(</span><span class="nx">e</span><span class="o">)</span> <span class="o">{</span> <span class="o">}</span> |
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<span class="k">return</span> <span class="nx">n</span><span class="o">;</span> |
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<span class="o">},</span> |
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<span class="nx">delegateHandler</span> <span class="o">=</span> <span class="k">function</span><span class="o">(</span><span class="nx">delegateKey</span><span class="o">,</span> <span class="nx">e</span><span class="o">,</span> <span class="nx">el</span><span class="o">)</span> <span class="o">{</span> |
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<span class="k">var</span> <span class="nx">target</span> <span class="o">=</span> <span class="nx">resolveTextNode</span><span class="o">((</span><span class="nx">e</span><span class="o">.</span><span class="nx">target</span> <span class="o">||</span> <span class="nx">e</span><span class="o">.</span><span class="nx">srcElement</span><span class="o">)),</span> |
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<span class="nx">tests</span> <span class="o">=</span> <span class="nx">delegates</span><span class="o">[</span><span class="nx">delegateKey</span><span class="o">],</span> |
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<span class="nx">spec</span><span class="o">,</span> |
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<span class="nx">ename</span><span class="o">,</span> |
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<span class="nx">matched</span><span class="o">,</span> |
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<span class="nx">fn</span><span class="o">,</span> |
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<span class="nx">ev</span><span class="o">;</span> |
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<span class="k">var</span> <span class="nx">getMatch</span> <span class="o">=</span> <span class="k">function</span><span class="o">(</span><span class="nx">el</span><span class="o">,</span> <span class="nx">selector</span><span class="o">,</span> <span class="nx">container</span><span class="o">)</span> <span class="o">{</span> |
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<span class="k">var</span> <span class="nx">returnVal</span><span class="o">;</span> |
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<span class="k">if</span> <span class="o">(!</span><span class="nx">el</span> <span class="o">||</span> <span class="nx">el</span> <span class="o">===</span> <span class="nx">container</span><span class="o">)</span> <span class="o">{</span> |
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<span class="nx">returnVal</span> <span class="o">=</span> <span class="kc">false</span><span class="o">;</span> |
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<span class="o">}</span> |
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<span class="k">else</span> <span class="o">{</span> |
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<span class="nx">returnVal</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Selector</span><span class="o">.</span><span class="nx">test</span><span class="o">(</span><span class="nx">el</span><span class="o">,</span> <span class="nx">selector</span><span class="o">)</span> <span class="o">?</span> <span class="nx">el</span><span class="o">:</span> <span class="nx">getMatch</span><span class="o">(</span><span class="nx">el</span><span class="o">.</span><span class="nx">parentNode</span><span class="o">,</span> <span class="nx">selector</span><span class="o">,</span> <span class="nx">container</span><span class="o">);</span> |
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<span class="o">}</span> |
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<span class="k">return</span> <span class="nx">returnVal</span><span class="o">;</span> |
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<span class="o">};</span> |
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<span class="k">for</span> <span class="o">(</span><span class="nx">spec</span> <span class="k">in</span> <span class="nx">tests</span><span class="o">)</span> <span class="o">{</span> |
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<span class="k">if</span> <span class="o">(</span><span class="nx">tests</span><span class="o">.</span><span class="nx">hasOwnProperty</span><span class="o">(</span><span class="nx">spec</span><span class="o">))</span> <span class="o">{</span> |
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<span class="nx">ename</span> <span class="o">=</span> <span class="nx">tests</span><span class="o">[</span><span class="nx">spec</span><span class="o">];</span> |
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<span class="nx">fn</span> <span class="o">=</span> <span class="nx">tests</span><span class="o">.</span><span class="nx">fn</span><span class="o">;</span> |
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<span class="nx">matched</span> <span class="o">=</span> <span class="kc">null</span><span class="o">;</span> |
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<span class="k">if</span> <span class="o">(</span><span class="nx">Y</span><span class="o">.</span><span class="nx">Selector</span><span class="o">.</span><span class="nx">test</span><span class="o">(</span><span class="nx">target</span><span class="o">,</span> <span class="nx">spec</span><span class="o">,</span> <span class="nx">el</span><span class="o">))</span> <span class="o">{</span> |
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<span class="nx">matched</span> <span class="o">=</span> <span class="nx">target</span><span class="o">;</span> |
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<span class="o">}</span> |
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<span class="k">else</span> <span class="k">if</span> <span class="o">(</span><span class="nx">Y</span><span class="o">.</span><span class="nx">Selector</span><span class="o">.</span><span class="nx">test</span><span class="o">(</span><span class="nx">target</span><span class="o">,</span> <span class="o">((</span><span class="nx">spec</span><span class="o">.</span><span class="nx">replace</span><span class="o">(</span><span class="sr">/,/gi</span><span class="o">,</span> <span class="s2">" *,"</span><span class="o">))</span> <span class="o">+</span> <span class="s2">" *"</span><span class="o">),</span> <span class="nx">el</span><span class="o">))</span> <span class="o">{</span> |
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<span class="c">// The target is a descendant of an element matching </span> |
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<span class="c"></span> <span class="c">// the selector, so crawl up to find the ancestor that </span> |
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<span class="c"></span> <span class="c">// matches the selector</span> |
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<span class="c"></span> |
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<span class="nx">matched</span> <span class="o">=</span> <span class="nx">getMatch</span><span class="o">(</span><span class="nx">target</span><span class="o">,</span> <span class="nx">spec</span><span class="o">,</span> <span class="nx">el</span><span class="o">);</span> |
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<span class="o">}</span> |
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<span class="k">if</span> <span class="o">(</span><span class="nx">matched</span><span class="o">)</span> <span class="o">{</span> |
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<span class="k">if</span> <span class="o">(!</span><span class="nx">ev</span><span class="o">)</span> <span class="o">{</span> |
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<span class="nx">ev</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">DOMEventFacade</span><span class="o">(</span><span class="nx">e</span><span class="o">,</span> <span class="nx">el</span><span class="o">);</span> |
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<span class="nx">ev</span><span class="o">.</span><span class="nx">container</span> <span class="o">=</span> <span class="nx">ev</span><span class="o">.</span><span class="nx">currentTarget</span><span class="o">;</span> |
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<span class="o">}</span> |
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<span class="nx">ev</span><span class="o">.</span><span class="nx">currentTarget</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Node</span><span class="o">.</span><span class="nx">get</span><span class="o">(</span><span class="nx">matched</span><span class="o">);</span> |
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<span class="nx">Y</span><span class="o">.</span><span class="nx">publish</span><span class="o">(</span><span class="nx">ename</span><span class="o">,</span> <span class="o">{</span> |
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<span class="nx">contextFn</span><span class="o">:</span> <span class="k">function</span><span class="o">()</span> <span class="o">{</span> |
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<span class="k">return</span> <span class="nx">ev</span><span class="o">.</span><span class="nx">currentTarget</span><span class="o">;</span> |
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<span class="o">}</span> |
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<span class="o">});</span> |
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<span class="k">if</span> <span class="o">(</span><span class="nx">fn</span><span class="o">)</span> <span class="o">{</span> |
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<span class="nx">fn</span><span class="o">(</span><span class="nx">ev</span><span class="o">,</span> <span class="nx">ename</span><span class="o">);</span> |
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<span class="o">}</span> |
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<span class="k">else</span> <span class="o">{</span> |
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<span class="nx">Y</span><span class="o">.</span><span class="nx">fire</span><span class="o">(</span><span class="nx">ename</span><span class="o">,</span> <span class="nx">ev</span><span class="o">);</span> |
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<span class="o">}</span> |
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<span class="o">}</span> |
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<span class="o">}</span> |
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<span class="o">}</span> |
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<span class="o">},</span> |
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<span class="nx">attach</span> <span class="o">=</span> <span class="k">function</span> <span class="o">(</span><span class="nx">type</span><span class="o">,</span> <span class="nx">key</span><span class="o">,</span> <span class="nx">element</span><span class="o">)</span> <span class="o">{</span> |
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<span class="k">var</span> <span class="nx">focusMethods</span> <span class="o">=</span> <span class="o">{</span> |
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<span class="nx">focus</span><span class="o">:</span> <span class="nx">Event</span><span class="o">.</span><span class="nx">_attachFocus</span><span class="o">,</span> |
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<span class="nx">blur</span><span class="o">:</span> <span class="nx">Event</span><span class="o">.</span><span class="nx">_attachBlur</span> |
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<span class="o">},</span> |
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<span class="nx">attachFn</span> <span class="o">=</span> <span class="nx">focusMethods</span><span class="o">[</span><span class="nx">type</span><span class="o">],</span> |
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<span class="nx">args</span> <span class="o">=</span> <span class="o">[</span><span class="nx">type</span><span class="o">,</span> |
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<span class="k">function</span> <span class="o">(</span><span class="nx">e</span><span class="o">)</span> <span class="o">{</span> |
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<span class="nx">delegateHandler</span><span class="o">(</span><span class="nx">key</span><span class="o">,</span> <span class="o">(</span><span class="nx">e</span> <span class="o">||</span> <span class="nb">window</span><span class="o">.</span><span class="nx">event</span><span class="o">),</span> <span class="nx">element</span><span class="o">);</span> |
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<span class="o">},</span> |
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<span class="nx">element</span><span class="o">];</span> |
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<span class="k">if</span> <span class="o">(</span><span class="nx">attachFn</span><span class="o">)</span> <span class="o">{</span> |
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<span class="k">return</span> <span class="nx">attachFn</span><span class="o">(</span><span class="nx">args</span><span class="o">,</span> <span class="o">{</span> <span class="nx">capture</span><span class="o">:</span> <span class="kc">true</span><span class="o">,</span> <span class="nx">facade</span><span class="o">:</span> <span class="kc">false</span> <span class="o">});</span> |
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<span class="o">}</span> |
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<span class="k">else</span> <span class="o">{</span> |
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<span class="k">return</span> <span class="nx">Event</span><span class="o">.</span><span class="nx">_attach</span><span class="o">(</span><span class="nx">args</span><span class="o">,</span> <span class="o">{</span> <span class="nx">facade</span><span class="o">:</span> <span class="kc">false</span> <span class="o">});</span> |
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<span class="o">}</span> |
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<span class="o">},</span> |
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<span class="nx">sanitize</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">cached</span><span class="o">(</span><span class="k">function</span><span class="o">(</span><span class="nx">str</span><span class="o">)</span> <span class="o">{</span> |
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<span class="k">return</span> <span class="nx">str</span><span class="o">.</span><span class="nx">replace</span><span class="o">(</span><span class="sr">/[|,:]/g</span><span class="o">,</span> <span class="s1">'~'</span><span class="o">);</span> |
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<span class="o">});</span> |
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<span class="c">/**</span> |
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<span class="c"> * Sets up event delegation on a container element. The delegated event</span> |
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<span class="c"> * will use a supplied selector to test if the target or one of the</span> |
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<span class="c"> * descendants of the target match it. The supplied callback function </span> |
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<span class="c"> * will only be executed if a match was encountered, and, in fact, </span> |
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<span class="c"> * will be executed for each element that matches if you supply an </span> |
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<span class="c"> * ambiguous selector.</span> |
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<span class="c"> *</span> |
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<span class="c"> * The event object for the delegated event is supplied to the callback</span> |
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<span class="c"> * function. It is modified slightly in order to support all properties</span> |
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<span class="c"> * that may be needed for event delegation. 'currentTarget' is set to</span> |
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<span class="c"> * the element that matched the delegation specifcation. 'container' is</span> |
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<span class="c"> * set to the element that the listener is bound to (this normally would</span> |
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<span class="c"> * be the 'currentTarget').</span> |
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<span class="c"> *</span> |
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<span class="c"> * @event delegate</span> |
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<span class="c"> * @param type {string} 'delegate'</span> |
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<span class="c"> * @param fn {function} the callback function to execute. This function</span> |
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<span class="c"> * will be provided the event object for the delegated event.</span> |
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<span class="c"> * @param el {string|node} the element that is the delegation container</span> |
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<span class="c"> * @param delegateType {string} the event type to delegate</span> |
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205 |
<span class="c"> * @param spec {string} a selector that must match the target of the</span> |
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206 |
<span class="c"> * event.</span> |
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207 |
<span class="c"> * @param context optional argument that specifies what 'this' refers to.</span> |
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208 |
<span class="c"> * @param args* 0..n additional arguments to pass on to the callback function.</span> |
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<span class="c"> * These arguments will be added after the event object.</span> |
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<span class="c"> * @return {EventHandle} the detach handle</span> |
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211 |
<span class="c"> * @for YUI</span> |
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212 |
<span class="c"> * @deprecated use Y.delegate</span> |
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213 |
<span class="c"> */</span> |
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214 |
<span class="nx">Y</span><span class="o">.</span><span class="nx">Env</span><span class="o">.</span><span class="nx">evt</span><span class="o">.</span><span class="nx">plugins</span><span class="o">.</span><span class="nx">delegate</span> <span class="o">=</span> <span class="o">{</span> |
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215 |
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216 |
<span class="nx">on</span><span class="o">:</span> <span class="k">function</span><span class="o">(</span><span class="nx">type</span><span class="o">,</span> <span class="nx">fn</span><span class="o">,</span> <span class="nx">el</span><span class="o">,</span> <span class="nx">delegateType</span><span class="o">,</span> <span class="nx">spec</span><span class="o">)</span> <span class="o">{</span> |
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217 |
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218 |
<span class="nx">Y</span><span class="o">.</span><span class="nx">log</span><span class="o">(</span><span class="s1">'delegate event is deprecated, use Y.delegate()'</span><span class="o">,</span> <span class="s1">'warn'</span><span class="o">,</span> <span class="s1">'deprecated'</span><span class="o">);</span> |
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219 |
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220 |
<span class="k">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nb">Array</span><span class="o">(</span><span class="nx">arguments</span><span class="o">,</span> <span class="m">0</span><span class="o">,</span> <span class="kc">true</span><span class="o">);</span> |
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221 |
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222 |
<span class="nx">args</span><span class="o">.</span><span class="nx">splice</span><span class="o">(</span><span class="m">3</span><span class="o">,</span> <span class="m">1</span><span class="o">);</span> |
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223 |
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224 |
<span class="nx">args</span><span class="o">[</span><span class="m">0</span><span class="o">]</span> <span class="o">=</span> <span class="nx">delegateType</span><span class="o">;</span> |
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225 |
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226 |
<span class="k">return</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">delegate</span><span class="o">.</span><span class="nx">apply</span><span class="o">(</span><span class="nx">Y</span><span class="o">,</span> <span class="nx">args</span><span class="o">);</span> |
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227 |
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228 |
<span class="o">}</span> |
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229 |
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230 |
<span class="o">};</span> |
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231 |
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232 |
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233 |
<span class="c">/**</span> |
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234 |
<span class="c"> * Sets up event delegation on a container element. The delegated event</span> |
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235 |
<span class="c"> * will use a supplied selector to test if the target or one of the</span> |
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236 |
<span class="c"> * descendants of the target match it. The supplied callback function </span> |
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237 |
<span class="c"> * will only be executed if a match was encountered, and, in fact, </span> |
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238 |
<span class="c"> * will be executed for each element that matches if you supply an </span> |
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239 |
<span class="c"> * ambiguous selector.</span> |
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240 |
<span class="c"> *</span> |
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241 |
<span class="c"> * The event object for the delegated event is supplied to the callback</span> |
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242 |
<span class="c"> * function. It is modified slightly in order to support all properties</span> |
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243 |
<span class="c"> * that may be needed for event delegation. 'currentTarget' is set to</span> |
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244 |
<span class="c"> * the element that matched the delegation specifcation. 'container' is</span> |
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245 |
<span class="c"> * set to the element that the listener is bound to (this normally would</span> |
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246 |
<span class="c"> * be the 'currentTarget').</span> |
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247 |
<span class="c"> *</span> |
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248 |
<span class="c"> * @method delegate</span> |
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249 |
<span class="c"> * @param type {string} the event type to delegate</span> |
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250 |
<span class="c"> * @param fn {function} the callback function to execute. This function</span> |
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251 |
<span class="c"> * will be provided the event object for the delegated event.</span> |
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252 |
<span class="c"> * @param el {string|node} the element that is the delegation container</span> |
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253 |
<span class="c"> * @param spec {string} a selector that must match the target of the</span> |
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254 |
<span class="c"> * event.</span> |
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255 |
<span class="c"> * @param context optional argument that specifies what 'this' refers to.</span> |
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256 |
<span class="c"> * @param args* 0..n additional arguments to pass on to the callback function.</span> |
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257 |
<span class="c"> * These arguments will be added after the event object.</span> |
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|
258 |
<span class="c"> * @return {EventHandle} the detach handle</span> |
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259 |
<span class="c"> * @for YUI</span> |
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|
260 |
<span class="c"> */</span> |
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261 |
<span class="nx">Event</span><span class="o">.</span><span class="nx">delegate</span> <span class="o">=</span> <span class="k">function</span> <span class="o">(</span><span class="nx">type</span><span class="o">,</span> <span class="nx">fn</span><span class="o">,</span> <span class="nx">el</span><span class="o">,</span> <span class="nx">spec</span><span class="o">)</span> <span class="o">{</span> |
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262 |
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|
263 |
<span class="k">if</span> <span class="o">(!</span><span class="nx">spec</span><span class="o">)</span> <span class="o">{</span> |
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|
264 |
<span class="nx">Y</span><span class="o">.</span><span class="nx">log</span><span class="o">(</span><span class="s1">'delegate: no spec, nothing to do'</span><span class="o">,</span> <span class="s1">'warn'</span><span class="o">,</span> <span class="s1">'event'</span><span class="o">);</span> |
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265 |
<span class="k">return</span> <span class="kc">false</span><span class="o">;</span> |
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|
266 |
<span class="o">}</span> |
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|
267 |
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268 |
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269 |
<span class="k">var</span> <span class="nx">args</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nb">Array</span><span class="o">(</span><span class="nx">arguments</span><span class="o">,</span> <span class="m">0</span><span class="o">,</span> <span class="kc">true</span><span class="o">),</span> |
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270 |
<span class="nx">element</span> <span class="o">=</span> <span class="nx">el</span><span class="o">,</span> <span class="c">// HTML element serving as the delegation container</span> |
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271 |
<span class="c"></span> <span class="nx">availHandle</span><span class="o">;</span> |
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272 |
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273 |
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274 |
<span class="k">if</span> <span class="o">(</span><span class="nx">Lang</span><span class="o">.</span><span class="nx">isString</span><span class="o">(</span><span class="nx">el</span><span class="o">))</span> <span class="o">{</span> |
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275 |
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276 |
<span class="c">// Y.Selector.query returns an array of matches unless specified </span> |
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|
277 |
<span class="c"></span> <span class="c">// to return just the first match. Since the primary use case for</span> |
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|
278 |
<span class="c"></span> <span class="c">// event delegation is to use a single event handler on a container,</span> |
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|
279 |
<span class="c"></span> <span class="c">// Y.delegate doesn't currently support being able to bind a </span> |
|
|
280 |
<span class="c"></span> <span class="c">// single listener to multiple containers.</span> |
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|
281 |
<span class="c"></span> |
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|
282 |
<span class="nx">element</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Selector</span><span class="o">.</span><span class="nx">query</span><span class="o">(</span><span class="nx">el</span><span class="o">,</span> <span class="kc">null</span><span class="o">,</span> <span class="kc">true</span><span class="o">);</span> |
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|
283 |
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|
284 |
<span class="k">if</span> <span class="o">(!</span><span class="nx">element</span><span class="o">)</span> <span class="o">{</span> <span class="c">// Not found, check using onAvailable</span> |
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|
285 |
<span class="c"></span> |
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|
286 |
<span class="nx">availHandle</span> <span class="o">=</span> <span class="nx">Event</span><span class="o">.</span><span class="nx">onAvailable</span><span class="o">(</span><span class="nx">el</span><span class="o">,</span> <span class="k">function</span><span class="o">()</span> <span class="o">{</span> |
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|
287 |
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|
288 |
<span class="nx">availHandle</span><span class="o">.</span><span class="nx">handle</span> <span class="o">=</span> <span class="nx">Event</span><span class="o">.</span><span class="nx">delegate</span><span class="o">.</span><span class="nx">apply</span><span class="o">(</span><span class="nx">Event</span><span class="o">,</span> <span class="nx">args</span><span class="o">);</span> |
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|
289 |
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290 |
<span class="o">},</span> <span class="nx">Event</span><span class="o">,</span> <span class="kc">true</span><span class="o">,</span> <span class="kc">false</span><span class="o">);</span> |
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291 |
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|
292 |
<span class="k">return</span> <span class="nx">availHandle</span><span class="o">;</span> |
|
|
293 |
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|
294 |
<span class="o">}</span> |
|
|
295 |
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|
|
296 |
<span class="o">}</span> |
|
|
297 |
|
|
|
298 |
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|
299 |
<span class="nx">element</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">Node</span><span class="o">.</span><span class="nx">getDOMNode</span><span class="o">(</span><span class="nx">element</span><span class="o">);</span> |
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|
300 |
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|
301 |
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|
302 |
<span class="k">var</span> <span class="nx">guid</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">stamp</span><span class="o">(</span><span class="nx">element</span><span class="o">),</span> |
|
|
303 |
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|
304 |
<span class="c">// The Custom Event for the delegation spec</span> |
|
|
305 |
<span class="c"></span> <span class="nx">ename</span> <span class="o">=</span> <span class="s1">'delegate:'</span> <span class="o">+</span> <span class="nx">guid</span> <span class="o">+</span> <span class="nx">type</span> <span class="o">+</span> <span class="nx">sanitize</span><span class="o">(</span><span class="nx">spec</span><span class="o">),</span> |
|
|
306 |
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|
|
307 |
<span class="c">// The key to the listener for the event type and container</span> |
|
|
308 |
<span class="c"></span> <span class="nx">delegateKey</span> <span class="o">=</span> <span class="nx">type</span> <span class="o">+</span> <span class="nx">guid</span><span class="o">,</span> |
|
|
309 |
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|
310 |
<span class="nx">delegate</span> <span class="o">=</span> <span class="nx">delegates</span><span class="o">[</span><span class="nx">delegateKey</span><span class="o">],</span> |
|
|
311 |
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|
|
312 |
<span class="nx">domEventHandle</span><span class="o">,</span> |
|
|
313 |
|
|
|
314 |
<span class="nx">ceHandle</span><span class="o">,</span> |
|
|
315 |
|
|
|
316 |
<span class="nx">listeners</span><span class="o">;</span> |
|
|
317 |
|
|
|
318 |
|
|
|
319 |
<span class="k">if</span> <span class="o">(!</span><span class="nx">delegate</span><span class="o">)</span> <span class="o">{</span> |
|
|
320 |
|
|
|
321 |
<span class="nx">delegate</span> <span class="o">=</span> <span class="o">{};</span> |
|
|
322 |
|
|
|
323 |
<span class="k">if</span> <span class="o">(</span><span class="nx">specialTypes</span><span class="o">[</span><span class="nx">type</span><span class="o">])</span> <span class="o">{</span> |
|
|
324 |
|
|
|
325 |
<span class="k">if</span> <span class="o">(!</span><span class="nx">Event</span><span class="o">.</span><span class="nx">_fireMouseEnter</span><span class="o">)</span> <span class="o">{</span> |
|
|
326 |
<span class="nx">Y</span><span class="o">.</span><span class="nx">log</span><span class="o">(</span><span class="s2">"Delegating a "</span> <span class="o">+</span> <span class="nx">type</span> <span class="o">+</span> <span class="s2">" event requires the event-mouseenter submodule."</span><span class="o">,</span> <span class="s2">"error"</span><span class="o">,</span> <span class="s2">"Event"</span><span class="o">);</span> |
|
|
327 |
<span class="k">return</span> <span class="kc">false</span><span class="o">;</span> |
|
|
328 |
<span class="o">}</span> |
|
|
329 |
|
|
|
330 |
<span class="nx">type</span> <span class="o">=</span> <span class="nx">specialTypes</span><span class="o">[</span><span class="nx">type</span><span class="o">];</span> |
|
|
331 |
<span class="nx">delegate</span><span class="o">.</span><span class="nx">fn</span> <span class="o">=</span> <span class="nx">Event</span><span class="o">.</span><span class="nx">_fireMouseEnter</span><span class="o">;</span> |
|
|
332 |
|
|
|
333 |
<span class="o">}</span> |
|
|
334 |
|
|
|
335 |
<span class="c">// Create the DOM Event wrapper that will fire the Custom Event</span> |
|
|
336 |
<span class="c"></span> |
|
|
337 |
<span class="nx">domEventHandle</span> <span class="o">=</span> <span class="nx">attach</span><span class="o">(</span><span class="nx">type</span><span class="o">,</span> <span class="nx">delegateKey</span><span class="o">,</span> <span class="nx">element</span><span class="o">);</span> |
|
|
338 |
|
|
|
339 |
|
|
|
340 |
<span class="c">// Hook into the _delete method for the Custom Event wrapper of this</span> |
|
|
341 |
<span class="c"></span> <span class="c">// DOM Event in order to clean up the 'delegates' map and unsubscribe</span> |
|
|
342 |
<span class="c"></span> <span class="c">// the associated Custom Event listeners fired by this DOM event</span> |
|
|
343 |
<span class="c"></span> <span class="c">// listener if/when the user calls "purgeElement" OR removes all </span> |
|
|
344 |
<span class="c"></span> <span class="c">// listeners of the Custom Event.</span> |
|
|
345 |
<span class="c"></span> |
|
|
346 |
<span class="nx">Y</span><span class="o">.</span><span class="nx">after</span><span class="o">(</span><span class="k">function</span> <span class="o">(</span><span class="nx">sub</span><span class="o">)</span> <span class="o">{</span> |
|
|
347 |
|
|
|
348 |
<span class="k">if</span> <span class="o">(</span><span class="nx">domEventHandle</span><span class="o">.</span><span class="nx">sub</span> <span class="o">==</span> <span class="nx">sub</span><span class="o">)</span> <span class="o">{</span> |
|
|
349 |
|
|
|
350 |
<span class="c">// Delete this event from the map of known delegates</span> |
|
|
351 |
<span class="c"></span> <span class="nx">delete</span> <span class="nx">delegates</span><span class="o">[</span><span class="nx">delegateKey</span><span class="o">];</span> |
|
|
352 |
|
|
|
353 |
<span class="nx">Y</span><span class="o">.</span><span class="nx">log</span><span class="o">(</span><span class="s2">"DOM event listener associated with the "</span> <span class="o">+</span> <span class="nx">ename</span> <span class="o">+</span> <span class="s2">" Custom Event removed. Removing all "</span> <span class="o">+</span> <span class="nx">ename</span> <span class="o">+</span> <span class="s2">" listeners."</span><span class="o">,</span> <span class="s2">"info"</span><span class="o">,</span> <span class="s2">"Event"</span><span class="o">);</span> |
|
|
354 |
|
|
|
355 |
<span class="c">// Unsubscribe all listeners of the Custom Event fired </span> |
|
|
356 |
<span class="c"></span> <span class="c">// by this DOM event.</span> |
|
|
357 |
<span class="c"></span> <span class="nx">Y</span><span class="o">.</span><span class="nx">detachAll</span><span class="o">(</span><span class="nx">ename</span><span class="o">);</span> |
|
|
358 |
|
|
|
359 |
<span class="o">}</span> |
|
|
360 |
|
|
|
361 |
<span class="o">},</span> <span class="nx">domEventHandle</span><span class="o">.</span><span class="nx">evt</span><span class="o">,</span> <span class="s2">"_delete"</span><span class="o">);</span> |
|
|
362 |
|
|
|
363 |
<span class="nx">delegate</span><span class="o">.</span><span class="nx">handle</span> <span class="o">=</span> <span class="nx">domEventHandle</span><span class="o">;</span> |
|
|
364 |
|
|
|
365 |
<span class="nx">delegates</span><span class="o">[</span><span class="nx">delegateKey</span><span class="o">]</span> <span class="o">=</span> <span class="nx">delegate</span><span class="o">;</span> |
|
|
366 |
|
|
|
367 |
<span class="o">}</span> |
|
|
368 |
|
|
|
369 |
|
|
|
370 |
<span class="nx">listeners</span> <span class="o">=</span> <span class="nx">delegate</span><span class="o">.</span><span class="nx">listeners</span><span class="o">;</span> |
|
|
371 |
|
|
|
372 |
<span class="nx">delegate</span><span class="o">.</span><span class="nx">listeners</span> <span class="o">=</span> <span class="nx">listeners</span> <span class="o">?</span> <span class="o">(</span><span class="nx">listeners</span> <span class="o">+</span> <span class="m">1</span><span class="o">)</span> <span class="o">:</span> <span class="m">1</span><span class="o">;</span> |
|
|
373 |
<span class="nx">delegate</span><span class="o">[</span><span class="nx">spec</span><span class="o">]</span> <span class="o">=</span> <span class="nx">ename</span><span class="o">;</span> |
|
|
374 |
|
|
|
375 |
|
|
|
376 |
<span class="nx">args</span><span class="o">[</span><span class="m">0</span><span class="o">]</span> <span class="o">=</span> <span class="nx">ename</span><span class="o">;</span> |
|
|
377 |
|
|
|
378 |
<span class="c">// Remove element, delegation spec</span> |
|
|
379 |
<span class="c"></span> <span class="nx">args</span><span class="o">.</span><span class="nx">splice</span><span class="o">(</span><span class="m">2</span><span class="o">,</span> <span class="m">2</span><span class="o">);</span> |
|
|
380 |
|
|
|
381 |
|
|
|
382 |
<span class="c">// Subscribe to the Custom Event for the delegation spec</span> |
|
|
383 |
<span class="c"></span> |
|
|
384 |
<span class="nx">ceHandle</span> <span class="o">=</span> <span class="nx">Y</span><span class="o">.</span><span class="nx">on</span><span class="o">.</span><span class="nx">apply</span><span class="o">(</span><span class="nx">Y</span><span class="o">,</span> <span class="nx">args</span><span class="o">);</span> |
|
|
385 |
|
|
|
386 |
|
|
|
387 |
<span class="c">// Hook into the detach method of the handle in order to clean up the </span> |
|
|
388 |
<span class="c"></span> <span class="c">// 'delegates' map and remove the associated DOM event handler </span> |
|
|
389 |
<span class="c"></span> <span class="c">// responsible for firing this Custom Event if all listener for this </span> |
|
|
390 |
<span class="c"></span> <span class="c">// event have been removed.</span> |
|
|
391 |
<span class="c"></span> |
|
|
392 |
<span class="nx">Y</span><span class="o">.</span><span class="nx">after</span><span class="o">(</span><span class="k">function</span> <span class="o">()</span> <span class="o">{</span> |
|
|
393 |
|
|
|
394 |
<span class="nx">delegate</span><span class="o">.</span><span class="nx">listeners</span> <span class="o">=</span> <span class="o">(</span><span class="nx">delegate</span><span class="o">.</span><span class="nx">listeners</span> <span class="o">-</span> <span class="m">1</span><span class="o">);</span> |
|
|
395 |
|
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396 |
<span class="k">if</span> <span class="o">(</span><span class="nx">delegate</span><span class="o">.</span><span class="nx">listeners</span> <span class="o">===</span> <span class="m">0</span><span class="o">)</span> <span class="o">{</span> |
|
|
397 |
<span class="nx">Y</span><span class="o">.</span><span class="nx">log</span><span class="o">(</span><span class="s2">"No more listeners for the "</span> <span class="o">+</span> <span class="nx">ename</span> <span class="o">+</span> <span class="s2">" Custom Event. Removing its associated DOM event listener."</span><span class="o">,</span> <span class="s2">"info"</span><span class="o">,</span> <span class="s2">"Event"</span><span class="o">);</span> |
|
|
398 |
<span class="nx">delegate</span><span class="o">.</span><span class="nx">handle</span><span class="o">.</span><span class="nx">detach</span><span class="o">();</span> |
|
|
399 |
<span class="o">}</span> |
|
|
400 |
|
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|
401 |
<span class="o">},</span> <span class="nx">ceHandle</span><span class="o">,</span> <span class="s2">"detach"</span><span class="o">);</span> |
|
|
402 |
|
|
|
403 |
<span class="k">return</span> <span class="nx">ceHandle</span><span class="o">;</span> |
|
|
404 |
|
|
|
405 |
<span class="o">};</span> |
|
|
406 |
|
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|
407 |
<span class="nx">Y</span><span class="o">.</span><span class="nx">delegate</span> <span class="o">=</span> <span class="nx">Event</span><span class="o">.</span><span class="nx">delegate</span><span class="o">;</span> |
|
|
408 |
</pre></div> |
|
|
409 |
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|
410 |
</div> |
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|
411 |
</div> |
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|
412 |
</div> |
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|
413 |
<div class="yui-b"> |
|
|
414 |
<div class="nav"> |
|
|
415 |
|
|
|
416 |
<div id="moduleList" class="module"> |
|
|
417 |
<h4>Modules</h4> |
|
|
418 |
<ul class="content"> |
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|
419 |
<li class=""><a href="module_anim.html" title="anim">anim</a></li> |
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420 |
<li class=""><a href="module_async-queue.html" title="async-queue">async-queue</a></li> |
|
|
421 |
<li class=""><a href="module_attribute.html" title="attribute">attribute</a></li> |
|
|
422 |
<li class=""><a href="module_base.html" title="base">base</a></li> |
|
|
423 |
<li class=""><a href="module_cache.html" title="cache">cache</a></li> |
|
|
424 |
<li class=""><a href="module_classnamemanager.html" title="classnamemanager">classnamemanager</a></li> |
|
|
425 |
<li class=""><a href="module_collection.html" title="collection">collection</a></li> |
|
|
426 |
<li class=""><a href="module_console.html" title="console">console</a></li> |
|
|
427 |
<li class=""><a href="module_console-filters.html" title="console-filters">console-filters</a></li> |
|
|
428 |
<li class=""><a href="module_cookie.html" title="cookie">cookie</a></li> |
|
|
429 |
<li class=""><a href="module_dataschema.html" title="dataschema">dataschema</a></li> |
|
|
430 |
<li class=""><a href="module_datasource.html" title="datasource">datasource</a></li> |
|
|
431 |
<li class=""><a href="module_datatype.html" title="datatype">datatype</a></li> |
|
|
432 |
<li class=""><a href="module_dd.html" title="dd">dd</a></li> |
|
|
433 |
<li class=""><a href="module_dom.html" title="dom">dom</a></li> |
|
|
434 |
<li class=""><a href="module_dump.html" title="dump">dump</a></li> |
|
|
435 |
<li class="selected"><a href="module_event.html" title="event">event</a></li> |
|
|
436 |
<li class=""><a href="module_event-custom.html" title="event-custom">event-custom</a></li> |
|
|
437 |
<li class=""><a href="module_event-simulate.html" title="event-simulate">event-simulate</a></li> |
|
|
438 |
<li class=""><a href="module_history.html" title="history">history</a></li> |
|
|
439 |
<li class=""><a href="module_imageloader.html" title="imageloader">imageloader</a></li> |
|
|
440 |
<li class=""><a href="module_io.html" title="io">io</a></li> |
|
|
441 |
<li class=""><a href="module_json.html" title="json">json</a></li> |
|
|
442 |
<li class=""><a href="module_node.html" title="node">node</a></li> |
|
|
443 |
<li class=""><a href="module_node-focusmanager.html" title="node-focusmanager">node-focusmanager</a></li> |
|
|
444 |
<li class=""><a href="module_node-menunav.html" title="node-menunav">node-menunav</a></li> |
|
|
445 |
<li class=""><a href="module_oop.html" title="oop">oop</a></li> |
|
|
446 |
<li class=""><a href="module_overlay.html" title="overlay">overlay</a></li> |
|
|
447 |
<li class=""><a href="module_plugin.html" title="plugin">plugin</a></li> |
|
|
448 |
<li class=""><a href="module_profiler.html" title="profiler">profiler</a></li> |
|
|
449 |
<li class=""><a href="module_queue-promote.html" title="queue-promote">queue-promote</a></li> |
|
|
450 |
<li class=""><a href="module_slider.html" title="slider">slider</a></li> |
|
|
451 |
<li class=""><a href="module_stylesheet.html" title="stylesheet">stylesheet</a></li> |
|
|
452 |
<li class=""><a href="module_substitute.html" title="substitute">substitute</a></li> |
|
|
453 |
<li class=""><a href="module_test.html" title="test">test</a></li> |
|
|
454 |
<li class=""><a href="module_widget.html" title="widget">widget</a></li> |
|
|
455 |
<li class=""><a href="module_widget-position.html" title="widget-position">widget-position</a></li> |
|
|
456 |
<li class=""><a href="module_widget-position-ext.html" title="widget-position-ext">widget-position-ext</a></li> |
|
|
457 |
<li class=""><a href="module_widget-stack.html" title="widget-stack">widget-stack</a></li> |
|
|
458 |
<li class=""><a href="module_widget-stdmod.html" title="widget-stdmod">widget-stdmod</a></li> |
|
|
459 |
<li class=""><a href="module_yui.html" title="yui">yui</a></li> |
|
|
460 |
</ul> |
|
|
461 |
</div> |
|
|
462 |
|
|
|
463 |
<div id="classList" class="module"> |
|
|
464 |
<h4>Classes</h4> |
|
|
465 |
<ul class="content"> |
|
|
466 |
<li class=""><a href="DOMEventFacade.html" title="DOMEventFacade">DOMEventFacade</a></li> |
|
|
467 |
<li class=""><a href="Event.html" title="Event">Event</a></li> |
|
|
468 |
</ul> |
|
|
469 |
</div> |
|
|
470 |
|
|
|
471 |
<div id="fileList" class="module"> |
|
|
472 |
<h4>Files</h4> |
|
|
473 |
<ul class="content"> |
|
|
474 |
<li class=""><a href="available.js.html" title="available.js">available.js</a></li> |
|
|
475 |
<li class="selected"><a href="delegate.js.html" title="delegate.js">delegate.js</a></li> |
|
|
476 |
<li class=""><a href="event-dom.js.html" title="event-dom.js">event-dom.js</a></li> |
|
|
477 |
<li class=""><a href="event-facade-dom.js.html" title="event-facade-dom.js">event-facade-dom.js</a></li> |
|
|
478 |
<li class=""><a href="event-ready-base.js.html" title="event-ready-base.js">event-ready-base.js</a></li> |
|
|
479 |
<li class=""><a href="event-ready.js.html" title="event-ready.js">event-ready.js</a></li> |
|
|
480 |
<li class=""><a href="focusblur.js.html" title="focusblur.js">focusblur.js</a></li> |
|
|
481 |
<li class=""><a href="key.js.html" title="key.js">key.js</a></li> |
|
|
482 |
<li class=""><a href="mouseentermouseleave.js.html" title="mouseentermouseleave.js">mouseentermouseleave.js</a></li> |
|
|
483 |
<li class=""><a href="mousewheel.js.html" title="mousewheel.js">mousewheel.js</a></li> |
|
|
484 |
<li class=""><a href="resize-window.js.html" title="resize-window.js">resize-window.js</a></li> |
|
|
485 |
</ul> |
|
|
486 |
</div> |
|
|
487 |
|
|
|
488 |
|
|
|
489 |
|
|
|
490 |
|
|
|
491 |
|
|
|
492 |
</div> |
|
|
493 |
</div> |
|
|
494 |
</div> |
|
|
495 |
<div id="ft"> |
|
|
496 |
<hr /> |
|
|
497 |
Copyright © 2009 Yahoo! Inc. All rights reserved. |
|
|
498 |
</div> |
|
|
499 |
</div> |
|
|
500 |
<script type="text/javascript"> |
|
|
501 |
ALL_YUI_PROPS = [{"access": "", "host": "Event", "name": "attach", "url": "Event.html#method_attach", "type": "method"}, {"access": "private", "host": "Event", "name": "_avail", "url": "Event.html#property__avail", "type": "property"}, {"access": "", "host": "DOMEventFacade", "name": "button", "url": "DOMEventFacade.html#property_button", "type": "property"}, {"access": "", "host": "DOMEventFacade", "name": "charCode", "url": "DOMEventFacade.html#property_charCode", "type": "property"}, {"access": "", "host": "DOMEventFacade", "name": "currentTarget", "url": "DOMEventFacade.html#property_currentTarget", "type": "property"}, {"access": "", "host": "Event", "name": "detach", "url": "Event.html#method_detach", "type": "method"}, {"access": "", "host": "Event", "name": "DOMReady", "url": "Event.html#property_DOMReady", "type": "property"}, {"access": "private", "host": "Event", "name": "_dri", "url": "Event.html#property__dri", "type": "property"}, {"access": "private", "host": "Event", "name": "_el_events", "url": "Event.html#property__el_events", "type": "property"}, {"access": "", "host": "DOMEventFacade", "name": "_event", "url": "DOMEventFacade.html#property__event", "type": "property"}, {"access": "", "host": "Event", "name": "generateId", "url": "Event.html#method_generateId", "type": "method"}, {"access": "", "host": "Event", "name": "getEvent", "url": "Event.html#method_getEvent", "type": "method"}, {"access": "", "host": "Event", "name": "getListeners", "url": "Event.html#method_getListeners", "type": "method"}, {"access": "", "host": "DOMEventFacade", "name": "halt", "url": "DOMEventFacade.html#method_halt", "type": "method"}, {"access": "private", "host": "Event", "name": "_interval", "url": "Event.html#property__interval", "type": "property"}, {"access": "private", "host": "Event", "name": "_isValidCollection", "url": "Event.html#method__isValidCollection", "type": "method"}, {"access": "", "host": "DOMEventFacade", "name": "keyCode", "url": "DOMEventFacade.html#property_keyCode", "type": "property"}, {"access": "", "host": "Event", "name": "lastError", "url": "Event.html#property_lastError", "type": "property"}, {"access": "private", "host": "Event", "name": "_load", "url": "Event.html#method__load", "type": "method"}, {"access": "private", "host": "Event", "name": "_loadComplete", "url": "Event.html#property__loadComplete", "type": "property"}, {"access": "private", "host": "Event", "name": "nativeAdd", "url": "Event.html#method_nativeAdd", "type": "method"}, {"access": "private", "host": "Event", "name": "nativeRemove", "url": "Event.html#method_nativeRemove", "type": "method"}, {"access": "", "host": "Event", "name": "onAvailable", "url": "Event.html#method_onAvailable", "type": "method"}, {"access": "", "host": "Event", "name": "onContentReady", "url": "Event.html#method_onContentReady", "type": "method"}, {"access": "", "host": "DOMEventFacade", "name": "pageX", "url": "DOMEventFacade.html#property_pageX", "type": "property"}, {"access": "", "host": "DOMEventFacade", "name": "pageY", "url": "DOMEventFacade.html#property_pageY", "type": "property"}, {"access": "private", "host": "Event", "name": "_poll", "url": "Event.html#method__poll", "type": "method"}, {"access": "", "host": "Event", "name": "POLL_INTERVAL", "url": "Event.html#property_POLL_INTERVAL", "type": "property"}, {"access": "", "host": "Event", "name": "POLL_RETRYS", "url": "Event.html#property_POLL_RETRYS", "type": "property"}, {"access": "", "host": "DOMEventFacade", "name": "preventDefault", "url": "DOMEventFacade.html#method_preventDefault", "type": "method"}, {"access": "", "host": "Event", "name": "purgeElement", "url": "Event.html#method_purgeElement", "type": "method"}, {"access": "", "host": "DOMEventFacade", "name": "relatedTarget", "url": "DOMEventFacade.html#property_relatedTarget", "type": "property"}, {"access": "private", "host": "DOMEventFacade", "name": "resolve", "url": "DOMEventFacade.html#method_resolve", "type": "method"}, {"access": "private", "host": "Event", "name": "_retryCount", "url": "Event.html#property__retryCount", "type": "property"}, {"access": "private", "host": "Event", "name": "startInterval", "url": "Event.html#method_startInterval", "type": "method"}, {"access": "", "host": "DOMEventFacade", "name": "stopImmediatePropagation", "url": "DOMEventFacade.html#method_stopImmediatePropagation", "type": "method"}, {"access": "", "host": "DOMEventFacade", "name": "stopPropagation", "url": "DOMEventFacade.html#method_stopPropagation", "type": "method"}, {"access": "", "host": "DOMEventFacade", "name": "target", "url": "DOMEventFacade.html#property_target", "type": "property"}, {"access": "private", "host": "Event", "name": "_unload", "url": "Event.html#method__unload", "type": "method"}, {"access": "private", "host": "DOMEventFacade", "name": "webkitKeymap", "url": "DOMEventFacade.html#property_webkitKeymap", "type": "property"}, {"access": "", "host": "DOMEventFacade", "name": "wheelDelta", "url": "DOMEventFacade.html#property_wheelDelta", "type": "property"}, {"access": "", "host": "DOMEventFacade", "name": "which", "url": "DOMEventFacade.html#property_which", "type": "property"}, {"access": "private", "host": "Event", "name": "_wrappers", "url": "Event.html#property__wrappers", "type": "property"}]; |
|
|
502 |
</script> |
|
|
503 |
</body> |
|
|
504 |
</html> |